RE: Patent 4,734,690

"Brandon J. Van Every" <[email protected]>
Newsgroups gmane.games.devel.opengl
Organization Fat City Network Services, San Diego, California
Message-ID <[email protected]>
Daniele Benegiamo wrote:
>
> It's seems very important because if the patent is valid no modern 3D
> can be done without royalties...
> >
> > More specifically, we are looking for prior art (textbooks,
> > references, articles, or other publications) with a date of
> > publication of before July 23, 1983 which would invalidate the '690
> > patent.

If the patent was filed in 1983, then in the USA it expired in 2000.


Cheers,                         www.indiegamedesign.com
Brandon Van Every               Seattle, WA

20% of the world is real.
80% is gobbledygook we make up inside our own heads.

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